Merge pull request #2 from yvan-sraka/staticlib-build.rs

Fix the need of `staticlib` target to have a `build.rs` customization

src/cabal.rs

@@ -11,13 +11,16 @@ custom-setup
     setup-depends:  Cabal, base, directory, process"
     };
 
+    let lib_name = name.replace('-', "_"); // In library generated by Cargo, '-' is replaced by '_'
+    let package_name = name.replace('_', "-"); // Cabal does not expect '_' for packages names
+
     let extra = if enable_nix {
         format!(
             "
     -- `haskell.nix` tell GHC linker where to find the `libNAME.a` by setting
     -- automatically `extra-lib-dirs`:
     -- https://input-output-hk.github.io/haskell.nix/tutorials/pkg-map.html
-    extra-libraries:  {name}
+    extra-libraries:  {lib_name}
 
     -- Cross-compilation to target `x86_64-w64-mingw32-cc` thrown a lot of
     -- `undefined reference to 'X'` errors during linking stage ...
@@ -32,7 +35,7 @@ custom-setup
         format!(
             "
     -- Libraries that are bundled with the package.
-    extra-bundled-libraries: {name}"
+    extra-bundled-libraries: {lib_name}"
         )
     };
 
@@ -49,7 +52,7 @@ custom-setup
 -- documentation, see: http://haskell.org/cabal/users-guide/
 --
 -- The name of the package.
-name:               {name}
+name:               {package_name}
 
 -- The package version.
 -- See the Haskell package versioning policy (PVP) for standards